This is what they state as of today, and remember it was only yesterday (Monday) they made a short range prediction up to Wednesday, and now it's falling into line with the WeatherAction.com forecast produced on the 8th February (yes, last Friday)

Issued at: 0838 on Tue 12 Feb 2013

There is a 90% probability of severe cold weather/icy conditions/snow between 0800 on Tuesday and 0800 on Thursday in parts of England. This weather could increase the health risks to vulnerable patients and disrupt the delivery of services. Please refer to the national Cold Weather Plan and your Trust's emergency plan for appropriate preventive action....click above Met Office link to read latest Amber warning report

Predominantly dry weather is likely to prevail over the UK through much of this period, although sunshine amounts will vary from day to day. As we move towards the middle of the first week, northern and northwestern parts of the UK may become somewhat more unsettled with rain or sleet at times, although any snow is likely to be confined to the hills at first. East and southeast Britain may also encounter a few wintry showers on occasion. In terms of temperatures, most places will be close to normal at first, with no more than patchy frost by night, but a downward trend is likely later in February, with frost becoming more widespread and daytimes feeling rather cold.

» How much "Man Made" CO2 Is In The Earth's Atmosphere?
I think ALL of the CO2 in the Earth's Atmosphere is from man.
I'm not sure how much "Man Made" CO2 is in the Earth's Atmosphere.
There is .04% CO2 in the Earth's Atmosphere and of that "Man" has added an extra 4% (1 part in 62,500)